Automatic door opening and closing device.



L. IVES. Aurommc oooN OPENING ANI) cLosING DEvIIIE.l

APPLICATION 'FILED I)Ec.21. Isls.

Patented Nov. -13, 1917.

fm1/E, I.

S14/vento@ [owls /es @Milf-M #2mm/mw IioUIs Ivns, or DEARBORN, MICHIGAN.

AUTOMATIC DOOR OPENING .AND vCLOSING DEVICE.

Specification of Letters Patent.

Patented Nov. 13, 191 '7.

Application filed December 27, 1916. Serial No. 139,195.

To all zo hom t may concern.'

Be it known that I, LOUIS Ivns, a citizen of the United States of America, residing at Dearborn, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Automatic Door Opening and Closing Devices, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to an automatic door opening and closing device in which a hori- Vmovement of theplatform; and further to obtain various advantages hereinafter set forth.

In the drawings:

Figure l is a sectional view of the coi1- struction embodying my invention;

Fig. 2 is an enlarged perspective viewof the connections between the door and the platform;

Fig. 3 is a fragmentary longitudinal view thereof;

Fig. 4 is a cross section upon the line 4 4 of Fig. 3; and

Fig. 5 is a detail view.

A represents the platform located within the recess B in the flooring B `and mounted upon the supports A pivotally mounted upon the arms A2 xedly secured to the rock shafts A3 extending across and rotatably mounted in the frame A4. For the purpose of maintaining the platform in its normal, 0r upper position, the members C are xedly secured to the rock shafts A3 and connected by the member C which is engaged at one end by the spring C2 secured to the frame A. In order to provide a simple and easily assembled connection which will properly operate, the member D is xedly secured to the rock shaft A3 and extends outwardly and upwardly therefrom, its outer end having a recess D therein adapted to be engaged by the reduced end of the sleeve E. The

platform A is provided with the aperture Q for permitting the sleeve E to `extend therethrough. Itotatably fitting within the sleeve E is the pin F to the outer end of which is pivotally secured the member G, to which in turn is rotatably secured the member G by means of the shouldered pin II extending axially therethrough and into the member G and secured to the latter by means of the transverse pin G2. The member G is rotatably secured to the pivot member I pivotally mounted in the bracket I secured to the horizontally swinging door J.

For the purpose of adjusting the amount of swing of the door J, the collar K upon the sleeve E is provided with the set screw K passing therethrough and adapted to engage the sleeve, and the pin F is provided with the transversely extending pin F, adapted to engage the internal annular groove K2 of the collar through the diametrically opposite openings F2 in one side of the annular groove, the sleeve E being cut away at the diametrically opposite sides E sufhciently to permit of relative rotative movement of the pin F and the collar K. Asis readily apparent the amount of swing of the door J can be increased by an upward adjustment of the collar K upon the sleeve E, or decreased by a downward adjustment thereof. f

In operation downward movement of the platform A actuates the rock shafts A3 which rock the member D, the sleeve E and the pin F which in turn moves the members G and G longitudinally and also relativelyk horizontally to swing the door J. During this operation the pivot member I rotates horizontally in the bracketV I the member G rotates vertically relative to the pivot member I and also rotates relatively tothe member G about the longitudinal axis passing through the members, the member G rotates vertically relative to the pin F, and the pin F rotates horizontally relative to the sleeve E and the collar K. This construction i's such that the door J will open or close easily and smoothly without any binding or unsteady movement taking place.

As shown in the drawings, the member D is located within the frame A4 and the support A is pivotally secured thereto, as at 2, the arm A2 not being necessary. It is also understood that the member D can be secured to the rock shaft A3 outside of the frame A and with the other connections pass upwardly through the leaves L, the arm A2 within the frame being necessary under these conditions.

Another feature of the invention relates to the means for avoiding the open space which would occur between the platform A and the flooring B upon relative movement thereof, this means comprising the leaves L resting upon the platform and flooring and permitting of relative movement thereof. In the present instance the leaves L are pivotally secured to the platform A by means of the pins M loosely fitting within the apertures M in the leaves, the leaves slidably engaging the iiooring B. For the purpose of having a practically level surface and at the same time a weather-proof construction the platform A is provided with the thin flat member N, preferably formed of metal, extending around its periphery and mounted upon the member O, to be spaced a suiiicient distance above the leaves L to permit of the necessary rocking movement thereof. IVithin the recess inclosed by the members N and O a suitable insert I) of rubber or other material is located, the top of this insert being substantially flush with the top of the member N.

From the above description it can be readily seen that my construction is simple and compact, may be readily assembled and moreover eiiiciently performs its functions. Furthermore the construction is such that it has a neat and pleasing appearance.

What I claim as my invention is:

l. In an automatic door opening and closing device, the combination with a door, of a platform, a rock arm actuated by said platform, a sleeve connected to said rock arm, a pin rotatably mounted in said sleeve, a bracket upon said door, a pivot pin rotatably mounted in said bracket, and relatively rotatable members one of which is pivotally secured to said pin and the other of which is pivotally secured to said pivot pin.

2. In an automatic door opening and closing device, the combination' with a hori- Zontally 'swinging door, of a substantially vertically movable platform, a rock shaft operated byv said platform, an outwardly and upwardly extending member fiXedly secured to said rock shaft, a sleeve engaging said member, a pin rotatably mounted in said sleeve, a bracket upon said door, a pivot pin mounted in said bracket, relatively rotatable members pivotally secured to said pin and pivot pin, and means for adjusting said pin longitudinally of said sleeve.

3. In an automatic door opening and closing device, the combination with a horizontally swinging door, of a substantially vertically movable platform, a rock shaft operated by said platform, an outwardly and upwardly extending member fiXedly senaaste cured to said rock shaft, a sleeve engaging said member, a pin rotatably mounted in said sleeve, a bracket secured to said door, a pivot pin rotatably mounted in said bracket, relatively rotatable members pivotally secured to said pin and pivot pin, a collar adjustably secured upon said sleeve and provided with an internal groove and a transversely extending pin in pin engaging said groove, said sleevcbeing dianetrically oppositely apertured to permit f 'said engagement and of relative movemeot of said pin and collar.

4. In an automatic door opening and closing device, the combination with a door, of a platform, a rock arm actuated by said platform, a sleeve connected to said rock arm, a pin rotatably mounted in said sleeve,

means for adjusting said pin relative to said sleeve, and connections between said pin and said door.

5. In an automatic door opening and closingdevicc, the combination with a flooring provided with a recess and a platform` mounted in said recess and relatively movable to said flooring, of a member extending around the periphery of said platform, a flat member upon said member and projecting outwardly beyond theV outer faces of said member to provide a space between said flat member and said platform, and leaves extending from'said flooring to said platform and engaging said space.

6. In an automatic door opening and clos.

ing device, the combination with a flooring provided with a recess and a platform mounted in said recess and relatively movable to said flooring, of a member extending around the periphery of said platform and spaced above said platform, an insert located within the recess formed by said member and flush therewith, and leaves extending between said flooring and said platform and extending into the space between said in said sleeve, a collar adjustably secured upon said sleeve and provided with a groove, a transversely-extending pin engaging said first-mentioned pin and the groove in said collar, said sleeve being apertured to permit of said transvcrsely-extending pir passing therethrough and of relative move- Uiso ment of said first-mentioned pin and collar, and connections betiveen said first-mentioned pin and the door.

9. In a device for operating a door from a platform, the combination vwith a member adapted to be actuated by the platform and a. second member extending in the same direction as said first-mentioned member and rotatively engaging the same, of relatively rotatable members pivotally engaging said second member and the door.

10. In a device for operating a doo-r from a platform, the combination with a mem` ber adapted to be actuated by the platform and a second member rotatively engaging said first-mentioned member, of relatively rotatable members pivotally engaging said second member and the door, and a pin eX- tending axially into said last-mentioned relatively rotatable members at their adjacent ends, fixedly engaging the one and rotatably engaging the other of said members.

1l. The combination with flooring and a platform relatively movable thereto, of leaves surrounding said platform and mounted on the same and said flooring, and means for protecting and Weatherproong the portions of the leaves engaging said platform.

l2. The combination with flooring and a platform relatively movable thereto, of a leaf pivotally secured to said platform and slidabily engaging said flooring, and Weatherproofing means for the pivotally secured portion of the leaf.

13. The combination With flooring and a platform relatively movable thereto, of a leaf pivotally secured to one of said elements and slidably engaging the other, and Weather-proofing means for the portion of the leaf upon the platform element.

14. In a device for operating a door from a platform, the combination with a member adapted to be actuated by the platform, and a second member concentric With and rotatively engaging said first-mentioned member, connections between said second member and the door.

In testimony whereof I afHX my signature.

LOUIS IVES.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

